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From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] gpt: GUID/UUID - GPT restoration - open questions
Date: Wed, 05 Sep 2012 14:21:14 -0600	[thread overview]
Message-ID: <5047B43A.5010204@wwwdotorg.org> (raw)
In-Reply-To: <20120824104836.22dfc647@amdc308.digital.local>

On 08/24/2012 02:48 AM, Lukasz Majewski wrote:
> Hi Stephen,
> 
> I'm writing to you, since I've posted a patch series regarding GPT
> support for Samsung Trats board (you were on the CC).
> 
> e.g. http://patchwork.ozlabs.org/patch/179785/
> 
> I think, that we can cooperate to provide better EFI/GPT support.
> 
> In mine implementation the "gpt" command (with several sub commands) has
> been proposed
> - we can discuss if this is a correct way to go.
> 
> Moreover, at this patch series a "weak" GUID generator is implemented.
> For now it is "good enough", since I consider the restoration as an
> emergency situation.

I think that (perhaps optionally) allowing the user to specify their own
UUIDs would be a good idea; whatever was generating the script being
executed might have access to a better entropy source.

> However,I wonder how can we provide better GUID (and in general random
> numbers pool) generator for u-boot.
> 
> Maybe md5sum command can be used with some running clock (WDT, or
> system clock from u-boot start up) data to provide better entropy?

If there's a standard way of retrieving wall-clock, MAC address, ...
it'd definitely be a good idea to include those entropy sources.

  reply	other threads:[~2012-09-05 20:21 UTC|newest]

Thread overview: 95+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-24  8:13 [U-Boot] [PATCH 0/6] gpt: GUID Partition Table (GPT) restoration Lukasz Majewski
2012-08-24  8:13 ` [U-Boot] [PATCH 1/6] gpt:doc: GPT (GUID Partition Table) documentation Lukasz Majewski
2012-09-05 19:31   ` Stephen Warren
2012-09-06  9:22     ` Lukasz Majewski
2012-08-24  8:13 ` [U-Boot] [PATCH 2/6] gpt: Replace the leXX_to_int() calls with ones defined at <compiler.h> Lukasz Majewski
2012-09-05 19:35   ` Stephen Warren
2012-09-06 10:20     ` Lukasz Majewski
2012-09-06 18:53       ` Stephen Warren
     [not found]         ` <SNT002-W181FE3CE14BE68990CDF80CCB920@phx.gbl>
2012-09-12 14:42           ` Lukasz Majewski
2012-09-05 19:45   ` Stephen Warren
2012-09-06 10:15     ` Lukasz Majewski
2012-08-24  8:13 ` [U-Boot] [PATCH 3/6] gpt: Replacement of GPT structures members with ones indicating endianness and size Lukasz Majewski
2012-09-05 19:41   ` Stephen Warren
2012-09-06 10:24     ` Lukasz Majewski
2012-08-24  8:13 ` [U-Boot] [PATCH 4/6] gpt: Support for GPT (GUID Partition Table) restoration Lukasz Majewski
2012-09-05 19:49   ` Stephen Warren
2012-09-06 11:19     ` Lukasz Majewski
2012-09-06 18:55       ` Stephen Warren
2012-09-05 20:19   ` Stephen Warren
2012-10-03 23:00   ` [U-Boot] [U-Boot, " Tom Rini
2012-10-04  7:18     ` [U-Boot] [u-boot] Adding missing CONFIG_SYS_CACHELINE_SIZE to boards definitions Lukasz Majewski
2012-10-04  8:28       ` esw
2012-10-18 18:48         ` Albert ARIBAUD
2012-10-04  9:02       ` Helmut Raiger
2012-08-24  8:13 ` [U-Boot] [PATCH 5/6] gpt: Support for new "gpt" command Lukasz Majewski
2012-09-05 20:08   ` Stephen Warren
2012-09-06 14:01     ` Lukasz Majewski
2012-08-24  8:13 ` [U-Boot] [PATCH 6/6] gpt: Enable support for GPT partition table restoration at Samsung's Trats Lukasz Majewski
2012-08-24  8:48 ` [U-Boot] gpt: GUID/UUID - GPT restoration - open questions Lukasz Majewski
2012-09-05 20:21   ` Stephen Warren [this message]
2012-09-06 11:27     ` Lukasz Majewski
2012-09-06 12:27   ` Rob Herring
2012-09-06 14:14     ` Lukasz Majewski
2012-09-06 18:57       ` Stephen Warren
2012-09-07  6:45         ` Lukasz Majewski
2012-09-03  9:28 ` [U-Boot] gpt: GUID/UUID - GPT restoration - open questions - RESEND Lukasz Majewski
2012-10-02 13:46   ` Simon Glass
2012-10-02 16:39     ` Lukasz Majewski
2012-09-03  9:30 ` [U-Boot] [PATCH 0/6] gpt: GUID Partition Table (GPT) restoration Lukasz Majewski
2012-09-12 14:50 ` [U-Boot] [PATCH v2 0/7] " Lukasz Majewski
2012-09-12 14:50   ` [U-Boot] [PATCH v2 1/7] vsprintf:fix: Change type returned by ustrtoul Lukasz Majewski
2012-09-12 14:50   ` [U-Boot] [PATCH v2 2/7] part:efi: Move part_efi.h file to ./include Lukasz Majewski
2012-09-12 14:50   ` [U-Boot] [PATCH v2 3/7] gpt:doc: GPT (GUID Partition Table) documentation Lukasz Majewski
2012-09-12 14:50   ` [U-Boot] [PATCH v2 4/7] gpt: The leXX_to_int() calls replaced with ones defined at <compiler.h> Lukasz Majewski
2012-09-12 14:50   ` [U-Boot] [PATCH v2 5/7] gpt: Support for GPT (GUID Partition Table) restoration Lukasz Majewski
2012-09-12 17:22     ` Tom Rini
2012-09-12 14:50   ` [U-Boot] [PATCH v2 6/7] gpt: Support for new "gpt" command Lukasz Majewski
2012-09-12 17:21     ` Tom Rini
2012-09-12 14:50   ` [U-Boot] [PATCH v2 7/7] gpt: Enable support for GPT partition table restoration at Samsung's Trats Lukasz Majewski
2012-09-12 17:23   ` [U-Boot] [PATCH v2 0/7] gpt: GUID Partition Table (GPT) restoration Tom Rini
2012-09-13  6:20     ` Lukasz Majewski
2012-09-13 17:39       ` Tom Rini
2012-09-13  8:09 ` [U-Boot] [PATCH v3 " Lukasz Majewski
2012-09-13  8:09   ` [U-Boot] [PATCH v3 1/7] vsprintf:fix: Change type returned by ustrtoul Lukasz Majewski
2012-09-13  8:10   ` [U-Boot] [PATCH v3 2/7] part:efi: Move part_efi.h file to ./include Lukasz Majewski
2012-09-13 18:54     ` Kim Phillips
2012-09-13  8:10   ` [U-Boot] [PATCH v3 3/7] gpt:doc: GPT (GUID Partition Table) documentation Lukasz Majewski
2012-09-17 17:58     ` Stephen Warren
2012-10-05 10:35       ` Lukasz Majewski
2012-10-05 15:19         ` Lukasz Majewski
2012-10-05 16:05         ` Stephen Warren
2012-09-13  8:10   ` [U-Boot] [PATCH v3 4/7] gpt: The leXX_to_int() calls replaced with ones defined at <compiler.h> Lukasz Majewski
2012-09-13  8:10   ` [U-Boot] [PATCH v3 5/7] gpt: Support for GPT (GUID Partition Table) restoration Lukasz Majewski
2012-09-17 18:07     ` Stephen Warren
2012-10-05 10:50       ` Lukasz Majewski
2012-09-13  8:10   ` [U-Boot] [PATCH v3 6/7] gpt: Support for new "gpt" command Lukasz Majewski
2012-09-13  8:10   ` [U-Boot] [PATCH v3 7/7] gpt: Enable support for GPT partition table restoration at Samsung's Trats Lukasz Majewski
2012-11-09  9:22 ` [U-Boot] [PATCH v4 0/7] gpt: GUID Partition Table (GPT) restoration Piotr Wilczek
2012-11-09  9:22   ` [U-Boot] [PATCH v4 1/7] vsprintf:fix: Change type returned by ustrtoul Piotr Wilczek
2012-11-19 19:19     ` Stephen Warren
2012-11-09  9:22   ` [U-Boot] [PATCH v4 2/7] part:efi: Move part_efi.h file to ./include Piotr Wilczek
2012-11-19 19:30     ` Stephen Warren
2012-11-19 20:41       ` Tom Rini
2012-11-20 17:46         ` Lukasz Majewski
2012-11-09  9:22   ` [U-Boot] [PATCH v4 3/7] gpt:doc: GPT (GUID Partition Table) documentation Piotr Wilczek
2012-11-19 19:28     ` Stephen Warren
2012-11-09 10:48   ` [U-Boot] [PATCH v4 4/7] gpt: The leXX_to_int() calls replaced with ones defined at <compiler.h> Piotr Wilczek
2012-11-09 10:48     ` [U-Boot] [PATCH v4 5/7] gpt: Support for GPT (GUID Partition Table) restoration Piotr Wilczek
2012-11-19 20:16       ` Stephen Warren
2012-11-21 13:18         ` Piotr Wilczek
2012-11-22 12:16           ` Lukasz Majewski
2012-11-26 23:46             ` Stephen Warren
2012-11-24 18:05           ` Stephen Warren
2012-11-26 13:08             ` Piotr Wilczek
2012-11-09 10:48     ` [U-Boot] [PATCH v4 6/7] gpt: Support for new "gpt" command Piotr Wilczek
2012-11-19 21:34       ` Stephen Warren
2012-11-21 11:22         ` Piotr Wilczek
2012-11-24 18:00           ` Stephen Warren
2012-11-26 13:08             ` Piotr Wilczek
2012-11-26 23:49               ` Stephen Warren
2012-11-09 10:48     ` [U-Boot] [PATCH v4 7/7] gpt: Enable support for GPT partition table restoration at Samsung's Trats Piotr Wilczek
2012-11-19 19:39     ` [U-Boot] [PATCH v4 4/7] gpt: The leXX_to_int() calls replaced with ones defined at <compiler.h> Stephen Warren
2012-11-19 20:43   ` [U-Boot] [PATCH v4 0/7] gpt: GUID Partition Table (GPT) restoration Tom Rini
2012-12-06 20:40   ` Tom Rini
2012-12-07  9:03     ` Piotr Wilczek

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